Home / 52,211.40-78,327.20-21,049.80

Finding the Fourth Proportional to 52,211.40, 78,327.20 and 21,049.80

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Solution

The fourth proportional to 52,211.40, 78,327.20 and 21,049.80 is: 31,578.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,211.40 : 78,327.20 = 21,049.80 : x
  2. Step 2: Convert to fraction form
    52,211.40/78,327.20 = 21,049.80/x
  3. Step 3: Cross multiply
    52,211.40x = 78,327.20 × 21,049.80
  4. Step 4: Simplify right side
    52,211.40x = 1,648,771,894.56
  5. Step 5: Solve for x
    x = 1,648,771,894.56/52,211.40
  6. Step 6: Final answer
    x = 31,578.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.